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油蒸汽流泵临界前级压力的定义的修改建议夏正勋（兰州真龙真空设备公司）按照气体动力学理论，文［１］导出了油蒸汽流泵（油扩散泵，油扩散喷射泵）扩压器喉部蒸汽射流的临界压力的计算公式式中Ｐ０——油锅中油蒸汽的压力，ＰａＫ——油蒸汽的绝热指数ｄ２——喷射喷咀...
Oil vapor flow pump critical pressure before the definition of the proposed changes Xiazheng Xun (Lanzhou Zhenlong vacuum equipment company) according to the gas dynamics theory [1] derived oil vapor flow pump (oil diffusion pump, oil diffusion jet pump) Throat steam jet of the critical pressure formula P0 is the oil in the oil tank steam pressure, PaK - oil vapor thermal insulation index d2 - jet nozzle ...